Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691299 | Anionic detergent mixtures | — | 1997-11-25 |
| 5691300 | Rinse aids for the machine washing of hard surfaces | Juergen Haerer, Birgit Burg, Marica Nejtek, Peter Jeschke, Udo Hees | 1997-11-25 |